A two year grant was awarded by ERDA in February 1976, to flew York University, to investigate the interrelationships between temperature distribution, fluid flow, boiler size and heat exchanger design in a fossil-fuel fired fluidized bed combustor. Under this contract a one-foot and a three-foot diameter bed with attendant instrumentation were to be designed, built, and tested. This paper presents heat transfer results obtained in the one-foot diameter facility. The results indicate that by a proper distribution of the fluidizing gas at the grid, the steam generating surface of the boiler can be reduced significantly. These results thus imply that for a given boiler configuration, one can obtain significantly more steam generation by changing the injection path at the fluidizing grid.
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